The only logical explanation for the fact that society all over the world is absolutely not afraid of nuclear war is degradation, obscurantism and slumbering stupidity....
Maybe if you actually studied MAD and the human response to stress, you might actually understand it.
To put it simply, there are three stages in dealing with stress. Alarm, resistance, and exhaustion. And to be honest, most of the planet has simply move on to the exhaustion phase. We have a lot of tin-pot dictators now either with nukes or trying to get nukes, and all seem to believe it is some kind of magic wand they can wave in order to get what they want. And most of the world is simply tired of playing their little game. And the more they scream they are going to use their magic wands, the more bored we get.
And notice, who are the ones threatening to use them? Is it the US? NATO? Is the UK or France threatening to nuke anybody that does not bow down to their demands? Is Israel threatening to nuke Palestine if they do not stop fighting?
No, it is always the despotic authoritarian dictators like China, North Korea, and Russia that are making such threats. And they stopped frightening us a long time ago, now they simply bore us.
Maybe you should direct your anger at the nations that are actually threatening to use their nukes. Like Russia.